<div class="input__container">
  <div class="shadow__input"></div>
  <button class="input__button__shadow">
    <svg
      xmlns="http://www.w3.org/2000/svg"
      viewBox="0 0 24 24"
      fill="#000000"
      width="20px"
      height="20px"
    >
      <path d="M0 0h24v24H0z" fill="none"></path>
      <path
        d="M12 12c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm0 2c-2.67 0-8 1.34-8 4v2h16v-2c0-2.66-5.33-4-8-4z"
      ></path>
    </svg>
  </button>
  <input
    type="text"
    name="username"
    class="input__search"
    placeholder="Enter username"
  />
</div>

<style>
/* From Uiverse.io by 0xnihilism  - Tags: 3d, input, username, brutalism, raw */
.input__container {
  position: relative;
  background: #f0f0f0;
  padding: 20px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 15px;
  border: 4px solid #000;
  max-width: 350px;
  transition: all 400ms cubic-bezier(0.23, 1, 0.32, 1);
  transform-style: preserve-3d;
  transform: rotateX(10deg) rotateY(-10deg);
  perspective: 1000px;
  box-shadow: 10px 10px 0 #000;
}

.input__container:hover {
  transform: rotateX(5deg) rotateY(1 deg) scale(1.05);
  box-shadow: 25px 25px 0 -5px #e9b50b, 25px 25px 0 0 #000;
}

.shadow__input {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  bottom: 0;
  z-index: -1;
  transform: translateZ(-50px);
  background: linear-gradient(
    45deg,
    rgba(255, 107, 107, 0.4) 0%,
    rgba(255, 107, 107, 0.1) 100%
  );
  filter: blur(20px);
}

.input__button__shadow {
  cursor: pointer;
  border: 3px solid #000;
  background: #e9b50b;
  transition: all 400ms cubic-bezier(0.23, 1, 0.32, 1);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px;
  transform: translateZ(20px);
  position: relative;
  z-index: 3;
  font-weight: bold;
  text-transform: uppercase;
}

.input__button__shadow:hover {
  background: #e9b50b;
  transform: translateZ(10px) translateX(-5px) translateY(-5px);
  box-shadow: 5px 5px 0 0 #000;
}

.input__button__shadow svg {
  fill: #000;
  width: 25px;
  height: 25px;
}

.input__search {
  width: 100%;
  outline: none;
  border: 3px solid #000;
  padding: 15px;
  font-size: 18px;
  background: #fff;
  color: #000;
  transform: translateZ(10px);
  transition: all 400ms cubic-bezier(0.23, 1, 0.32, 1);
  position: relative;
  z-index: 3;
  font-family: "Roboto", Arial, sans-serif;
  letter-spacing: -0.5px;
}

.input__search::placeholder {
  color: #666;
  font-weight: bold;
  text-transform: uppercase;
}

.input__search:hover,
.input__search:focus {
  background: #f0f0f0;
  transform: translateZ(20px) translateX(-5px) translateY(-5px);
  box-shadow: 5px 5px 0 0 #000;
}

.input__container::before {
  content: "USERNAME";
  position: absolute;
  top: -15px;
  left: 20px;
  background: #e9b50b;
  color: #000;
  font-weight: bold;
  padding: 5px 10px;
  font-size: 14px;
  transform: translateZ(50px);
  z-index: 4;
  border: 2px solid #000;
}

</style>
    